Cooling system for internal-combustion engines.



' 110. 869,369. PATENTED 001 .29, 1907.

F. G. HOBART & W. w. GORE.

COOLING SYSTEM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED 11:13.26, 1901.

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No. 869,369. PATENTED 001'. 29,. 1907. F. G. HOBART & W. W. GORE. COOLING SYSTEM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAR. 26, 1907.

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No. 869,369. PATENTED 0011.29. 1907. F. G. HOBART & W. w. GORE. COOLING SYSTEM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION ITLBD MAR. 26, 1907.

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w tnessvs zafiflx The circulating chamber UNITED STATES, PATENT or mon.

FRANKLIN G. IIOBAR" AND WARREN W. GORE, OF BELOIT, WISCONSIN, ASSIGXORS 'lO FAIRBANKS, MORSE d; COMIAX Y, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

COOLING SYSTEM FOR.INTERNAL-COMBUSTION ENGINES.

To all whom it may concern:

'Be it known that we, FRANKLIN G. I'IOBART and WARREN W. Gonn, citizens of the United States of America, residing at Beloit, in the county of Rock and State of Wisconsin, have invented certain new and useful Improvements in Cooling Systems for Internal- Combustion Engines, of which the following is a specification', referencebeing had therein to the accompany ing drawings.

- Our invention relates to new and useful improvements in cooling devices for internal combustion on- I gines, and is particularly adapted for engines using kerosene and other comparatively high fire test oils.

Our cooling device may be employed with the ordinary gas or gasolene engine, which has been adapted to 'use kerosene.

For satisfactory operation, all parts of the cylinder of an engine using kerosene for fuel must be kept at a comparatively high temperature, and this cannot be done where cold water is taken directly into the jacket.

It is therefore the purpose of our invention to pass warm water into the jacket, and to that end we mix the hot water taken from the outlet of the jacket with the cold ,water which would ordinarily enter the inlet thereof at a low temperature.

I The preferred means by which we accomplish the desired result will be more scribed and set forth in the claims.

In the drawings, Figures 1 and 2 are respectively end and side elevations of a stationary kerosene engine arranged to be cooled by running water; Fig. 3 is a side elevation of a stationary kerosene engine with which a cooling tank is employed with thermo-siphon circulation; and Fig. 4 is a side elevation of a portable kerosene engine provided with a cooling tank and a circulating pump.

The engine cylinder L is provided with a water inlet pipe B leading to the lower side of the water jacket, and the outlet pipe 0 leading from the top of the water jacket. These pipes connect at separated points I) and 0 respectively with a circulating or mixing chamber, or conduit A, as shown in Figs. 1 and 2.

Where connection is to be made for the use of running water for cooling, the inlet connection is made at D, and the outlet, or overflow, connection at E in the circulating chamber A, and these connections are preferably below and above respectively and on opposite sides of the outlet connection from the jacket. A connection F is provided at the bottom of the circulating chamber for draining the system when desired; 4

The operation of this system of piping is as follows:

A, being of large volume relative to the volume of cold water entering at I), the hot water from the jacket entering at 0 will be mixed with particularly hereinafter de- Specification of Letters Patent. Application filed March 26. 1907.

. take water iromjhe connecting with the water iuckol having inlet Patented Oct. 29, 1907. Serial No. 364.712.

this cold water in a proportion determined by the volume of cold water entering at D. The pipe D is preferably relatively small and the flow therethrough is regulated by a valve (1 whereby a predetermined temperature may be maintained in the circulating chamber A. Thus, water at a comparatively high temperaturecan be taken into the jacket from the chamber A through the pipe B. I

In thearrangement shown in Fig. 3, the connections from the water jacket are made with a circulating chamher A and are identical with those shown in Figs. 1 and 2. The chambeixor conduit A, however, is preferably made slightly longer than the cooling tank T, with which it'is connected by the pipes h and G near the top and bottom, respectively. A .valve II is provided in the pipe G bythe manipulation of whicha greateror less flow of water may be permitted between the cooling tank and the circulating chamber.

In the arrangement shown in Fig. 4, the cylinder L of the portable engine is provided with a suitable circulating pump, such as the rotary pump P, arranged to jacket through the pipe C at the the cylinder. B is the inlet pipe jacket at the point 0 and pipes ll and C are connected with the cooling tank T through the medium of pipes G and K, respectively. A bypass conduit A connects pipes C and B, and by regulating the valve H in the pipe K by means of the handle or stem 72 a greater or loss volume of water taken from the jacket may be made to flow through the by-pass A and reenter the jacket after mixing with and raising the temperature of the cold water flowing from the cooling tank and the pipe G into the pipe l3.

What we claim as our invention is:

1. ln a cooling system, the combination with a cylinder water jacket and inlet and outlet connections therefor. of a water supply connection and means communicating iln:-ru wirlr for mixing a portion of the water from said jacket oullct' with water from said supply connection and passing said mixture into said inlet, for the purpose described.

L. in a coolingsystem.

point. (f at the top of the combination with a cylinder and outlet, 01' a mixing conduit having connccliozls comumnicaling with said inlet and outlot, a water supply connection oimnunicnling with said conduit. and means for regulatingthe amount of water from said outlet returned to v aid inlet, for the purpose describ d.

.l. in a cooling 3-' 'lt!ill, the combination with :1 cylinder writer jacket, of :i mixing conduit. a water supply connection commuuiculing therewith, and inlet :lIHhollLleiI con duils .l'or said jacket connecting with said mixing conduit. 1. in a cooling system. the combination with a cylinder water jacket, of a mixing conduit, 21 water supply (701N100 lion communicating iherewith, and inlet and outlet conduits for said ,inckct connecting with said mixing conduit at spaced points. v

5. In a cooling system, the combination with a cylinder 10 and outlet pipes.

\vntcr jacket. of a mixing chamberor conduit, 21 'water supply connection communicating therewith, and inlet and outlet conduits [or said jacket connecting with said mix ing chnmbci' or conduit on opposite sides of said supply connection.

'6. In a cooling system, a cylinder water jacket provided with an inlet and an outlet, a water supply, pipes connecting the water supply with the inlet and outlet of the cylinder water jacket, and a by pass connecting said inlet 7. In a cooling system, a cylinder Water jacket provided I l f 

